Diamond.co.jp ダイヤモンド社

ダイヤモンド社公式サイト。新刊案内、書籍と雑誌の検索、会社案内等。週刊ダイヤモンド等の雑誌、ビジネス書・経済書をはじめとした書籍など、幅広いテーマの出版物を発行。

Diamond.co.jp Overview

Website Overview:

Name: diamond.co.jp

Title: ダイヤモンド社

Description: ダイヤモンド社公式サイト。新刊案内、書籍と雑誌の検索、会社案内等。週刊ダイヤモンド等の雑誌、ビジネス書・経済書をはじめとした書籍など、幅広いテーマの出版物を発行。

Diamond.co.jp is the official website of ダイヤモンド社 (Diamondsha), a Japanese publishing company. The website serves as a platform for promoting and providing information about their publications, including new releases, book and magazine searches, and company details. They cover a broad range of topics, including weekly magazines like 週刊ダイヤモンド (Weekly Diamond) as well as business and economic books.

Site Traffic:

According to the available data, diamond.co.jp receives approximately 1740 unique users per day, resulting in 2958 page views. The website has been estimated to be valued at 52560 US dollars.

Hosting:

The website is hosted by GOOGLE-PRIVATE-CLOUD - Google LLC, which is located in the United States.

Domain and Security:

Diamond.co.jp has a Top Level Domain (TLD) of .JP, indicating that it is associated with Japan. The SSL certificate is issued by Google Trust Services LLC, which ensures secure communication between the website and its users.

Family-Friendly:

Based on the information provided, it is not explicitly mentioned whether diamond.co.jp is a family-friendly website. However, as it is a publishing website primarily focused on books and magazines, it can be assumed that the content is generally suitable for a wide range of audiences.

PageSpeed Insights Score:

The website's PageSpeed Insights score for speed is 18. This score may indicate that there are potential performance issues affecting the website's loading speed. It is recommended to optimize the site's speed to enhance user experience and improve search engine rankings.

In summary, diamond.co.jp is the official website of ダイヤモンド社 (Diamondsha), a Japanese publishing company. It provides information on their publications, including new releases, book and magazine searches, and company details

Diamond.co.jp Rank Summary

Global Rank

231,018

Average Load Time

0.76sec

Links In Count

655

Website Value

$52,613

Audience Geography. Where are diamond.co.jp visitors located?

Country	Visitors
Japan JP	98.4%
Other	1.6%

Country	Pageviews
Japan JP	99.1%
Other	0.9%

Country	Rank
Japan JP	23345

Where do visitors go on diamond.co.jp?

Subdomain	Pageviews
diamond.co.jp	68.35%
other	31.66%

Subdomain	Pageviews per User
diamond.co.jp	2

Subdomain	Reach
diamond.co.jp	72.41%

How popular is diamond.co.jp?

Period	Global Rank	Global Rank Delta
past 3 months	231018	23016
past month	263934	13296
past week	181194	-20842

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	317823	13068	12	-3.74%	1.7	10%
30	330471	-47343	12	20%	2	50%
7	210778	-34898	22	20%	3	8%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	211675	28589	27	-14.81%
30	256817	37896	22	-17.88%
7	185913	-16644	3	10%

Diamond.co.jp Website Safety

Overview

Last Updated: 12/21/2025

Overall result - diamond.co.jp is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/24/2025

diamond.co.jp is safe.

Norton ConnectSafe evaluates diamond.co.jp for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 10/30/2016

diamond.co.jp is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

diamond.co.jp is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/24/2021

diamond.co.jp is safe.

McAfee assesses diamond.co.jp for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze diamond.co.jp for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/10/2019

diamond.co.jp child safety is very good.

The WOT calculates reputation of the diamond.co.jp. This reputation system receives ratings from users and information from third-party sources, assesses the diamond.co.jp for safety features and confirms, whether diamond.co.jp is suitable for children.

SSL Information

SSL Checker Tool

Domain	diamond.co.jp
Issuer Organization	Google Trust Services LLC
Issuer	GTS CA 1D4
Algorithm	RSA-SHA256
Valid form	09/17/2022
Expiration	12/16/2022
Signed	Certificate is not self signed
Additional Domains	diamond.co.jp

Diamond.co.jp Rank History

Alexa Rank shows how popular diamond.co.jp is in comparison with other sites. The most popular site has Alexa Rank equals 1. If diamond.co.jp has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to diamond.co.jp and pageviews on diamond.co.jp over the past 3 months.

Diamond.co.jp Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 12/18/2025

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 13335
ASName: CLOUDFLARENET
ASHandle: AS13335
RegDate: 2010-07-14
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/autnum/13335

OrgName: Cloudflare, Inc.
OrgId: CLOUD14
Address: 101 Townsend Street
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2010-07-09
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/entity/CLOUD14

OrgTechHandle: ADMIN2521-ARIN
OrgTechName: Admin
OrgTechPhone: +1-650-319-8930
OrgTechEmail: rir@cloudflare.com
OrgTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

OrgAbuseHandle: ABUSE2916-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-650-319-8930
OrgAbuseEmail: abuse@cloudflare.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

OrgNOCHandle: NOC11962-ARIN
OrgNOCName: NOC
OrgNOCPhone: +1-650-319-8930
OrgNOCEmail: noc@cloudflare.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RNOCHandle: NOC11962-ARIN
RNOCName: NOC
RNOCPhone: +1-650-319-8930
RNOCEmail: noc@cloudflare.com
RNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RTechHandle: ADMIN2521-ARIN
RTechName: Admin
RTechPhone: +1-650-319-8930
RTechEmail: rir@cloudflare.com
RTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

RAbuseHandle: ABUSE2916-ARIN
RAbuseName: Abuse
RAbusePhone: +1-650-319-8930
RAbuseEmail: abuse@cloudflare.com
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Diamond.co.jp Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

[ JPRS database provides information on network administration. Its use is ]
[ restricted to network administration purposes. For further information, ]
[ use 'whois -h whois.jprs.jp help'. To suppress Japanese output, add'/e' ]
[ at the end of command, e.g. 'whois -h whois.jprs.jp xxx/e'. ]
Domain Information: [ドメイン情報]
a. [ドメイン名] DIAMOND.CO.JP
e. [そしきめい] かぶしきがいしゃだいやもんどしゃ
f. [組織名] 株式会社ダイヤモンド社
g. [Organization] DIAMOND INC.
k. [組織種別] 株式会社
l. [Organization Type] corporation
m. [登録担当者] IS20652JP
n. [技術連絡担当者] IS20591JP
p. [ネームサーバ] ns-656.awsdns-18.net
p. [ネームサーバ] ns-178.awsdns-22.com
p. [ネームサーバ] ns-1888.awsdns-44.co.uk
p. [ネームサーバ] ns-1099.awsdns-09.org
s. [署名鍵]
[状態] Connected (2024/12/31)
[登録年月日] 1995/12/20
[接続年月日] 1996/08/07
[最終更新] 2024/05/20 13:07:07 (JST)

DNS Records

DNS Lookup Tool

Host	A Record	TTL
diamond.co.jp	119.75.228.61	600

Host	MX Record	Priority	TTL
diamond.co.jp	mailgw3.oneoffice.jp	10	600

Host	NS Record	TTL
diamond.co.jp	ns2.cent-inc.com	600
diamond.co.jp	ns1.cent-inc.com	600

Host	TXT Record	TTL
diamond.co.jp	v=spf1 include:fc9106.cuenote.jp include:gemini.oneoffice.jp include:crmstyle.com +ip4:211.10.31.199 +ip4:54.199.142.197 +ip4:54.250.154.33 +ip4:54.199.214.0 ~all	600

root.onetjp.com
TTL: 600
Email address: root.onetjp.com
Serial: 2019072603
Refresh: 600
Retry: 1800
Expire: 604800
Minimum: 86400

Diamond.co.jp HTML Check

HTML Validation Tool

Errors

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.

Bad value “imagetoolbar” for attribute “http-equiv” on element “meta”.

Bad value “Content-Style-Type” for attribute “http-equiv” on element “meta”.

Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.

Element “input” is missing required attribute “alt”.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Duplicate ID “subsearchForm”.

The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.

The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.

The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.

The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.

Warnings

The first occurrence of ID “subsearchForm” was here.

Diamond.co.jp Desktop Performance

Last tested: 06/14/2019

Desktop Speed

21%

Optimize images

Leverage browser caching

Enable compression

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Reduce server response time

Avoid landing page redirects

Minify JavaScript

Minify CSS

Desktop Resource Breakdown

Total Resources	132
Number of Hosts	12
Static Resources	120
JavaScript Resources	20
CSS Resources	3

Diamond.co.jp Mobile Insights

Last tested: 11/10/2018

Mobile Usability

99%

Size tap targets appropriately

Mobile Speed

18%

Optimize images

Leverage browser caching

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Avoid landing page redirects

Enable compression

Reduce server response time

Minify JavaScript

Minify CSS

Mobile Resource Breakdown

Total Resources	119
Number of Hosts	15
Static Resources	93
JavaScript Resources	26
CSS Resources	1

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Diamond.co.jp ダイヤモンド社

ダイヤモンド社公式サイト。新刊案内、書籍と雑誌の検索、会社案内等。週刊ダイヤモンド等の雑誌、ビジネス書・経済書をはじめとした書籍など、幅広いテーマの出版物を発行。

Diamond.co.jp Overview

Diamond.co.jp Rank Summary

Diamond.co.jp Website Safety

Diamond.co.jp Rank History

Diamond.co.jp Hosting Information

Diamond.co.jp Domain Registration and Settings

Diamond.co.jp HTML Check

Diamond.co.jp Desktop Performance

Diamond.co.jp Mobile Insights

Diamond.co.jp Similar Audits

Diamond.co.jp Common Typos